import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import router from '@/router'
import { getToken, removeToken } from '@/utils/auth'
import qs from 'qs'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 300000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['token'] = getToken()
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data

    // if the custom code is not 20000, it is judged as an error.
    if (res.code !== '0') {
      if (res.code === '401') {
        removeToken()
        router.push(`/login`)
      } else {
        Message({
          message: res.message,
          type: 'error',
          duration: 5 * 1000
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return res.data
    }
  },
  error => {
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error.message)
  }
)

export const get = (url, args = {}) => {
  let query = args
  query.timestamp = new Date().getTime()
  if (args) {
    if (typeof query === 'object') {
      query = qs.stringify(query)
    }
    url += (url.indexOf('?') !== -1) ? '&' : '?'
    url += query
  }
  return service({
    url: url,
    method: 'get'
  })
}

export const post = (url, args = {}) => {
  return service({
    url: url,
    method: 'post',
    data: args
  })
}

service['get'] = get
service['post'] = post
export default service
